ABSTRACT
<p><b>OBJECTIVE</b>To investigate the CT scan findings of primary pulmonary non-Hodgkin's lymphoma (PPNHL) and their relation to pathological features.</p><p><b>METHODS</b>The CT scan findings of 17 PPNHL cases confirmed pathologically from August 1992 to June 2007 were analyzed in relation to their pathological foundation.</p><p><b>RESULT</b>In 17 cases the CT findings showed: 1) Five were single mass or nodule, including 3 with air-bronchograms, 1 with straddling-lobe distribution and 3 with slight enhancement; 2) One was multi-nodules with air-bronchograms; 3) Six were consolidation with air bronchogram,including 3 with straddling-lobe distribution and 3 with slight enhancement; 4) Five were combined changes, including 5 with air-bronchograms, 2 with straddling-lobe distribution and 4 with slight enhancement. The CT features of PPNHL corresponded to their pathological process and pathological features.</p><p><b>CONCLUSION</b>Primary pulmonary non-Hodgkin's lymphoma should be considered when CT scan shows variety of images found in one patient, middle lobe of right lung involved, air-bronchograms and straddling-lobe distribution in consolidation with slight enhancement.</p>
